--- title: X-Ray History: How Wilhelm Roentgen Discovered How to See Through Skin description: Jan. 5, 1896: An Austrian newspaper reports Wilhelm Roentgen’s discovery of a new type of radiation, which becomes known as an X-ray canonical: https://time.com/3649842/x-ray/ author: Jennifer Latson article:opinion: false article:content_tier: free article:published_time: 2015-01-05T15:30:23.000Z article:modified_time: 2026-02-22T03:11:32.712Z article:section: History og:title: X-Ray History: How Wilhelm Roentgen Discovered How to See Through Skin og:description: Jan. 5, 1896: An Austrian newspaper reports Wilhelm Roentgen’s discovery of a new type of radiation, which becomes known as an X-ray og:url: https://time.com/3649842/x-ray/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blta6a89071c164b529/6987779355a859061fa85036/x-ray.jpeg?branch=production&width=859&quality=75&auto=webp&crop=16:9 og:image:width: 859 og:image:height: 483 og:image:alt: X-Ray Hand og:type: article twitter:card: summary_large_image twitter:title: X-Ray History: How Wilhelm Roentgen Discovered How to See Through Skin twitter:description: Jan. 5, 1896: An Austrian newspaper reports Wilhelm Roentgen’s discovery of a new type of radiation, which becomes known as an X-ray twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blta6a89071c164b529/6987779355a859061fa85036/x-ray.jpeg?branch=production&width=859&quality=75&auto=webp&crop=16:9 ---  # The Shy Scientist Who Could See Through Skin > Sponsored content. 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They are at time.com/newsletters and are separate from a paid subscription. by [Jennifer Latson](https://time.com/author/jennifer-latson/) ## Jennifer Latson Jan 5, 2015 3:30 PM UTC  Circa 1890: an X-Ray view of the hand and wrist of a four year-old child Circa 1890: an X-Ray view of the hand and wrist of a four year-old child George Eastman House / Getty Images by [Jennifer Latson](https://time.com/author/jennifer-latson/) ## Jennifer Latson Jan 5, 2015 3:30 PM UTC No one was initially more skeptical of the existence of X-rays than Wilhelm Roentgen — the man who discovered them. One day in late 1895, the German physicist was preparing to begin an experiment with cathode rays, the glowing beams of electrons that pass through a vacuum tube when electricity is applied, which were a popular fixture in physics at the time. In his darkened lab, he covered the tube with black cardboard to hide its glow, but noticed a [glimmer of light](http://time.com/wp-content/uploads/2015/01/seliger%5Fnov95.pdf) on a fluorescent screen across the room. Curious, Roentgen “placed a sheet of black cardboard between the screen and the tube, then another, then a book of 1000 pages, then a wooden shelf board more than two and a half centimeters thick,” according to a story in the journal [_Physics Today_](http://time.com/wp-content/uploads/2015/01/seliger%5Fnov95.pdf). “The glimmer remained.” At some point, he held up a small lead disk, and cast a terrifying shadow on the screen: the dark shape of the disk itself, along with the skeletal outline of the bones in his hand. According to _Physics Today_, Roentgen was very late to dinner with his family that night. When he did show up, “he did not speak, ate little, and then left abruptly” to return to his lab. Afraid that he might have imagined the whole thing, he cautiously told a friend, as quoted by the journal [_Resonance_](http://time.com/wp-content/uploads/2015/01/0002-0005.pdf), “I have discovered something interesting, but I do not know whether or not my observations are correct.” Eventually he summoned the courage to tell his wife what he’d seen, and enlisted her help in a follow-up experiment. Just before Christmas that year, he replaced the fluorescent screen with photographic paper and took the world’s first X-ray, a clear image of the bones and wedding ring on his wife’s left hand. She found the experience as unnerving as he had, exclaiming, “[I have seen my death](http://time.com/wp-content/uploads/2015/01/0002-0005.pdf).” When news of Roentgen’s discovery was published in an Austrian newspaper on this day, Jan. 5, in 1896, the monumental implications for science and medicine quickly became apparent. The New York _Times_ picked up the story two weeks later, but couched it in skepticism that echoed Roentgen’s own, reporting his “[alleged discovery of how to photograph the invisible.](http://www.nytimes.com/2009/06/16/health/16firs.html?module=Search&mabReward=relbias%3As%2C%7B%221%22%3A%22RI%3A8%22%7D&%5Fr=0)” While the _Times_ eventually wrote more glowingly of Roentgen’s discovery, neither it nor any other newspaper revealed much about the scientist himself. [Notoriously publicity-shy](http://time.com/wp-content/uploads/2015/01/0002-0005.pdf), he turned down countless speaking engagements and stipulated that when he died, his letters and journals should be destroyed. He eschewed fortune as well as fame: He [never patented X-rays](http://www.aps.org/publications/apsnews/200111/history.cfm), which he thought should be freely available to other researchers and the medical community, and, according to TIME’s brief notice at the time of his death, [donated the money that came with his 1901 Nobel Prize](http://content.time.com/time/subscriber/article/0,33009,715352,00.html) (about $40,000) to a scientific society. Roentgen’s generosity caught up with him near the end of his life, however. By the time he died, in 1923, his unwillingness to profit from his discovery — coupled with the economic conditions that followed World War I — had left him nearly penniless. **_Read TIME’s 1956 examination of the safety of X-rays_**: [X-Ray Danger](http://content.time.com/time/magazine/article/0,9171,862407,00.html) ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3649842/x-ray/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3649842/x-ray/"},"headline":"The Shy Scientist Who Could See Through Skin","datePublished":"2015-01-05T15:30:23.000Z","dateModified":"2026-02-22T03:11:32.712Z","description":"Jan. 5, 1896: An Austrian newspaper reports Wilhelm Roentgen’s discovery of a new type of radiation, which becomes known as an X-ray","url":"https://time.com/3649842/x-ray/","keywords":["medicine","Science topic","health","Radiation"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blta6a89071c164b529/6987779355a859061fa85036/x-ray.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Jennifer Latson","jobTitle":null,"url":"https://time.com/author/jennifer-latson/"}],"articleSection":"History","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blta6a89071c164b529/6987779355a859061fa85036/x-ray.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"X-Ray Hand","caption":"X-Ray Hand","creditText":"George Eastman House / Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/history/","name":"History"}},{"@type":"ListItem","position":2,"item":{"@id":"https://time.com/3649842/x-ray/","name":"The Shy Scientist Who Could See Through Skin"}}]}] ```